import axios from 'axios';
import { MessageBox, Message } from 'element-ui';
import store from '@/store';
import { getToken } from '@/utils/auth';
import CryptoJS from 'crypto-js';

/**
 * 加密
 */
function encrypt(str, key = '1635230227540WZH', iv = 'ZZWBKJ_ZHIHUAWEI') {
  var key = CryptoJS.enc.Utf8.parse(key);
  //加密向量16位
  var iv = CryptoJS.enc.Utf8.parse(iv);
  var encrypted = CryptoJS.AES.encrypt(str, key, {
    iv: iv,
    mode: CryptoJS.mode.CBC,
    padding: CryptoJS.pad.Pkcs7,
  });
  return encrypted.toString();
}

/**
 * 解密
 */
function decrypt(str, key = '1635230227540WZH', iv = 'ZZWBKJ_ZHIHUAWEI') {
  var key = CryptoJS.enc.Utf8.parse(KEY);
  var iv = CryptoJS.enc.Utf8.parse(IV);
  var decrypt = CryptoJS.AES.decrypt(str, key, {
    iv: iv,
    mode: CryptoJS.mode.CBC,
    padding: CryptoJS.pad.Pkcs7
  });
  return decrypt.toString(CryptoJS.enc.Utf8);
}

// create an axios instance
const service = axios.create({
  baseURL: process.env.VUE_APP_BASE_API, // url = base url + request url
  // withCredentials: true, // send cookies when cross-domain requests
  timeout: 5000, // request timeout
});

// request interceptor
service.interceptors.request.use(
  config => {
    // do something before request is sent

    if (store.getters.token) {
      // let each request carry token
      // ['X-Token'] is a custom headers key
      // please modify it according to the actual situation
      config.headers['Authorization'] = getToken();
    }
    if (typeof config != 'undefined' && config.data) {
      config.data = { data: encrypt(JSON.stringify(config.data)) };
    }
    return config;
  },
  error => {
    // do something with request error
    console.log(error); // for debug
    return Promise.reject(error);
  },
);

// response interceptor
service.interceptors.response.use(
  /**
   * If you want to get http information such as headers or status
   * Please return  response => response
   */

  /**
   * Determine the request status by custom code
   * Here is just an example
   * You can also judge the status by HTTP Status Code
   */
  response => {
    const res = response.data;

    // if the custom code is not 20000, it is judged as an error.
    if (res.code !== 200) {
      Message({
        message: res.message || 'Error',
        type: 'error',
        duration: 5 * 1000,
      });
      return Promise.reject(new Error(res.message || 'Error'));
    } else {
      return res;
    }
  },
  error => {
    if (error.response.status == 400) {
      if (error.response.data.code == 422) {
        MessageBox.confirm(error.response.data.message, '确认退出', {
          confirmButtonText: '重新登录',
          cancelButtonText: '取消',
          type: 'warning',
        }).then(() => {
          store.dispatch('user/resetToken').then(() => {
            location.reload();
          });
        });
      } else {
        Message({
          message: error.response.data.message || 'Error',
          type: 'error',
          duration: 5 * 1000,
        });
      }
      return Promise.resolve(new Error(error.response.data.message || 'Error'));
    } else {
      return Promise.reject(new Error(error.message || 'Error'));
    }
  },
);

export default service;
